402234489 has 12 divisors (see below), whose sum is σ = 581895600. Its totient is φ = 267745464.

The previous prime is 402234473. The next prime is 402234493. The reversal of 402234489 is 984432204.

It is not a de Polignac number, because 402234489 - 2⁴ = 402234473 is a prime.

It is a super-2 number, since 2×402234489² = 323585168282182242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402234449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27979 + ... + 39840.

It is an arithmetic number, because the mean of its divisors is an integer number (48491300).

Almost surely, 2^402234489 is an apocalyptic number.

It is an amenable number.

402234489 is a deficient number, since it is larger than the sum of its proper divisors (179661111).

402234489 is a wasteful number, since it uses less digits than its factorization.

402234489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68484 (or 68481 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 402234489 is about 20055.7844274414. The cubic root of 402234489 is about 738.1757408604.

The spelling of 402234489 in words is "four hundred two million, two hundred thirty-four thousand, four hundred eighty-nine".